Drill-holder.



J. M. CALDERWOUD DRILL HOLDER.

APIfLICAHnN flLtD APH. lo. |9|a.

Patented July 23, 1918.

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ff; afa/C mehr, 'ii/l i. M. CALDERWUUD,

umu HOLDER.

"PL'UT'ON FILED Ara. lo. |918.

Patented July 23, 19,18.

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[1. M. CALDERWUUD.

DRILL HOLDER.

APPLICATION FILED APR. IO. |918. 1,273,733.

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atroz w14 Patented July 23, 1918.

UNITED STATES PATENT OFFICE.

JOHN M. CALDERWOOD, 0F SPANISH FORK, UTAH. DRILL-HOLDER.

1 ,273,733 Speclcatlu of Letters Patent. Paten fed July 23, 1918, Application tiled April 10, 1918. Serial No. 227,758.

To all whom z't may concern.' Figure 1, is a side elevation;

Be it known that LJoHN M. Cawnawooo, Fig. 2, a vertical section, partly broken 55 a citizen of the United States, residing at away; Spanish Fork, in the county of Utah and Fig. 3. a view like Fig. 1, showing the State of Utah, have invented certain new parts adjusted:

and useful Improvements in Drill-Holders, 1g. l, a side elevation, with the parts of which the following is a specification. folded; 60

his invention relates to drill holders. Fig. 5, a view on line 5`5, Fig. 1;

he present invention has reference to Fig. 6, a section on line 6-6, Fig. 1; that general class of holders for hand drills Fig. T, a section on line T7, Fig. 5; such as are used in mining, irrigation, ditch Fig. 8, a section on line 8`8. Fig. 1,' construction, railroad construction, road Fig. 9, a section on line 9-9, Fig. 2. 65

building', and other work where a hand drill The standard l ma y be tubular and is rois used wluch is struck by a Sledge or ham vided nwith transverse holes at interva s of mer, its height. Secured to its lower end by My object is to provide, in a holder of the screw-threads` 3 is a cap l. Telescoped withclass specied, certain improvements in the in the .standard 1 is a lscrevwtlireaded stem 6 7o standard, the Outrigger arm and the drill whici has a squared lower end 7 xed to a y and hammer supports, whereby adjustability base or foot 8 b a plate 9. A loose nut 1U to meet all of the conditions'encountered in is carried by tie stein 6. An internally such work is obtained, whatever-the. angle screwthreaded adjusting nut 11 is engaged at which the drill is to be operated. Fur with a screw-threaded stem 6 and interposed 75 thermore, my invention contemplates the between the cap 4 and the niit 10. Loosely mounting and arrangement of the drill mounted on the standard l above the cap hanger and hammer in such manner that -l is a sleeve 12 which is connected by memthere is no possibility of a misdirected blow bers 1310 the nut 11. Disposed horizontally but, on the contrer accurate impact of the and entered in an opening 14 in the nut 11 3g hammer or Sledge on the drill is obtained, isa lever 15. By swinging the lever 15, the regardless of the angle at which the drill is nut 11 will be turned to thereby rotate the suspended. Vit-h my invention there is no latter on the screw-threaded stem 6 and possibility of injury to the hands of the raise or lower the standard. By this means, driller who is holding the drill to its work the base or foot 8 may be pressed against 35 while the hammer operator is operating the the surface of the ground or a wall after any hammer or sledge. By the useof the prent suitable block has been interposed between invention the work of drilling is Ieatly the upper end'fof the standard 1 and an oplightened and two men can about dou le the posing wall, thus firmly anchoring the standwork performed in a given time Vover the ard in position so that it, cannot move. 90 timerequired if the invention were not used. Slidable up and down on the standard 1 My invention contemplates a drill holder for positioning at any desired height is a lwhich can be folded so as to be readily supporting sleeve 16 which has an opening portable, in addition to the novel character- 1T adapted to aline with any one of the holes istics of its construction. 2, A pin 1S is then passed through the holes 95 One embodiment of the invention is' set .to lock the sleeve 16 in position. The sleeve forth hereinafter and shown in the accom- `carrics a clamping screw 19.

panying drawing. It is to be understood, Slidable up and down on the standard 1 however,` that modifications may be resorted is 'a tubular head 20 whose lower end [its to; furthermore, in several instances where within the upper end of the sleeve 16 so as 100 the construction is disclosed as comprising to be adapted to rotate in relation thereto. ,a plurality of parts connected together, it. The clamping screw 19 is tightened, to lock should be understood` that the y`may be made the tubular head 20 when the latter has been in an integral piece, where a justebilit as pt-"aitiuned as desired. The tubular head 20 between the respective parts, is not required. u.-,:ld telescope over instead of within, the 105 In thaaccompanylng drawlngs: sleeve 16.

The drill holder and hammer are supported by an out-ri ger arm 21 which may be made in a sing e piece, or, as a composite construction comprising a wooden center and upper and lower metal plates secured thereto. The arm is hinged to the tubular head 20 at 22 so that it is adapted to fold upwardly along side the standard 1 to condition the parts conveniently for transporta tion when the device is to be moved from place to place. Projecting downwardly from the arm 21 is a bracket 23 which is adapted to lie against the head 20 and relieve the hinge 22 of considerable strain vertically. The bracket has a yoke 24 which straddles the head 20 and bears against the o posite sides thereof for the purpose of re leving the hinge 22 from lateral strains and, further, to lock the arm 21 rigidlytothe head 20. For that purpose, a p1n 25 1s passed removably through openings 26 in the yokel 24. When the pin is removed the arm 21 can be swung upwardly.

Carried by the arm 21 is a plate 27 having a series of holes 28 to receive a clamping screw 29, used for a purpose which will presently appear.

Embracing and slidable on the arm 2l is a carrier 30 which has parts disposed between the arm and the plate 27, said arts bein provided with screw-threaded les 31 wich are adapted to receive the end of the screw 29. According to the position of the carrier 30 on the arm 21, the screw 29 will be inserted in a suitable one of the holes 28 to bring it in alinement with one of the y holesl 31 and lwill then be entered in the given hole 31 to lock the carrier to the arm 21.

, The carrier 30 may be of a unitary construction, or composed of Wood with u per and lower plates and metallic straps w ich embrace the arm 21,.

The carrier has a stud 32 on which is pivotally mounted to swing in a vertical plane, the adjusting head 33 which is held against displacement by a nut 34 on stud 32. The head 33 is rovided with arc shaped parts 35, of whic there may be oneor two, each having spaced holes 36. The carrier has screw-threaded holes 37. A bolt 38 is adapted to be entered throu h any of these holes 36 and screwed into t e holes 37,to`secure the head 33 in, any desired position (Fig. 3'). A hole 39 in the head 33 and holes 40 in the carrier 30. may also receive the bolt 38 for 'locking the head 33 in horizontal position (Figs. 1 and 6).'

The mountings for the drill support and the hammer or sledge are the same and the following description applies to both.

The head 33 has a squared' hole which receives the squared part 41 of a bolt `42, the latter being rigidly fastened by a nut 43. The bolt 42, lhasV a threaded outer end on .tivel ling h `mounting thereof, means for lockingv the diierent the drill support has a joint 48 which enables the drill support 49, with the drill 50 carried thereby, to be swung to one side to position the drill out of line with the hole which has been drilledf'tio enable the drillings to be cleaned out of the hole whenever desired. To lock the parts of the stem in relatively rigid condition, one of said parts is provided with a tongue 51 and the other with' a slidable keeper 52 to engage said tongue. On freeing the keeper fromthe ton e, the stem may be swung on its joint.

he hammer or Sledge 53-is of such a length from its point of suspension from bolt 42 that it is adapted to accurately strike the drill 50.

One man, Vthe driller, holds thedrill 50 in its lsupport 49 and the other man the Sledge-man, swings the hammer or 53 to and fro to cause it to strike the dri sledgle A With my invention not only can the carf around to position the drill for o eration in any part of the field of work. he entire device may be lfolded linto convenient condition place.

What I claim is z' a su port, of an out-rigger arm carried them y, a carrier slidable along said arm, an adjusting' head pivotall carrier, a drill support an hammer respec-l pivotally suspended :from` said adj-ustead on opposite sides of, the. pivotal carrento the arm, and means for lockingthe edgustinglhead to thecarrier. v f

In a drill holder, the combination' with a su port, of an .out-rigger ann,iearried there y,a carrier slidable along seidarm, said am being provided with apertures at points of its length, said carrier for transportation from place to mounted on the iusY 1. In a drill holder, the combination with having a screw-threaded opening, a screw adapted to be inserted in any one of" the openings of the arm and engaged with the screw-threaded opening in said carrier, and a drill support and hammer carried by said carrier.

3. In a drill holder, the combination with a support, of an out-ri ger arm carried thereby, a carrier adjustale along the arm and'adapted 4to be secured where adjusted, un adjusting head pivoted to the carrier to swing in a vertical plane and provided with openings located in the arc of a eirrle struck from the pivotal point of said head, said carrier having a surewthrraded hole adapted to aline with the openings in the head, a screw adapted to be inserted through any of the openings and en 1raged with the screwthl'eaded hole to lock the head in adjusted position, a drill support carried by the head, and a hummer cari-10d by the head.

4. In a drill holder, the combination with a support, of a drill support and a hammer carried thereby, the hammer bein adapted for striking a drill carried by sai support, said support being adapted for swinging lat,- erally 1n relation to the hammer to dispose the drill out of line with the hammer.

5. In a drill holder, the combination with a support, of a drill support and a hammer carried thereby, the hammer bein for strikin;.,1r a drill carried by szlig support, said support comprising jointed sections one of which may be shifted laterally in relation to tho hammer, and means for locking said sections together in rigid relation.

adaptalI In testimony whereof I aix my signature.

J( )HN M. CALDERWCOD. 

